Typo fix
Typo fix

Found a typo in docs and figured I would fix it.
habibmasuro/gspread,msuozzo/gspread,azenk/gspread,amleczko/gspread,gitqwerty777/myGspread,suminb/gspread,Squarespace/gspread,peczony/gspread,DanielHabib/gspread,wbrp/gspread,finoptimal/gspread,paulfitz/gspread,dimartiro/gspread,KandarpShah/gspread,rohit91/gspread,tjyang/gspread,jkhoogland/gspread,nateyoder/gspread,ShivaShinde/gspread,burnash/gspread,JPO1/gspread,m4rc1e/gspread,brakhane/gspread